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Class: RSpec::Matchers::BuiltIn::StartOrEndWith Private

Do not use. This class is for internal use only.
Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
RSpec::Matchers::BuiltIn::EndWith, RSpec::Matchers::BuiltIn::StartWith
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, BaseMatcher
Instance Chain:
self, BaseMatcher, BaseMatcher::DefaultFailureMessages, BaseMatcher::StringEncodingFormatting, BaseMatcher::HashFormatting, ::RSpec::Matchers::Composable
Inherits: RSpec::Matchers::BuiltIn::BaseMatcher
Defined in: rspec-expectations/lib/rspec/matchers/built_in/start_or_end_with.rb

Overview

Base class for the ‘end_with` and RSpec::Matchers#start_with matchers. Not intended to be instantiated directly.

Constant Summary

BaseMatcher - Inherited

UNDEFINED

Class Method Summary

BaseMatcher - Inherited

.matcher_name, .new,
.underscore

Borrowed from ActiveSupport.

Instance Attribute Summary

BaseMatcher - Inherited

#actual,
#diffable?

::RSpec::Matchers are not diffable by default.
#expected, #expects_call_stack_jump?, #matcher_name, #matcher_name=, #rescued_exception,
#supports_block_expectations?

Most matchers are value matchers (i.e. meant to work with ‘expect(value)`) rather than block matchers (i.e. meant to work with `expect { }`), so this defaults to false.
#supports_value_expectations?

BaseMatcher::StringEncodingFormatting - Included

#string_encoding_differs?

Instance Method Summary

BaseMatcher - Inherited

#actual_formatted,
#description

Generates a description using ::RSpec::Matchers::EnglishPhrasing.
#expected_formatted,
#match_unless_raises

Used to wrap a block of code that will indicate failure by raising one of the named exceptions.
#matches?

Indicates if the match is successful.
#assert_ivars,
#present_ivars

:nocov:

BaseMatcher::DefaultFailureMessages - Included

#failure_message

Provides a good generic failure message.
#failure_message_when_negated

Provides a good generic negative failure message.

BaseMatcher::StringEncodingFormatting - Included

#format_encoding

Formats a String’s encoding as a human readable string.

BaseMatcher::HashFormatting - Included

#improve_hash_formatting

‘{ :a => 5, :b => 2 }.inspect` produces:

::RSpec::Matchers::Composable - Included

#&

Alias for Composable#and.
#===

Delegates to ‘#matches?`.
#and

Creates a compound ‘and` expectation.
#description_of

Returns the description of the given object in a way that is aware of composed matchers.
#or

Creates a compound ‘or` expectation.
#values_match?

This provides a generic way to fuzzy-match an expected value against an actual value.
#|

Alias for Composable#or.
#should_enumerate?

We should enumerate arrays as long as they are not recursive.
#surface_descriptions_in

Transforms the given data structure (typically a hash or array) into a new data structure that, when ‘#inspect` is called on it, will provide descriptions of any contained matchers rather than the normal #inspect output.
#unreadable_io?,
#with_matchers_cloned

Historically, a single matcher instance was only checked against a single value.

Instance Attribute Details

#subsets_comparable? ⇒ Boolean (readonly, private)

[ GitHub ] 

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/start_or_end_with.rb', line 48



def subsets_comparable?
  # Structs support the Enumerable interface but don't really have
  # the semantics of a subset of a larger set...
  return false if Struct === expected

  expected.respond_to?(:length)
end


  







Instance Method Details



  

    #description  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/start_or_end_with.rb', line 27



def description
  return super unless Hash === expected
  english_name = EnglishPhrasing.split_words(self.class.matcher_name)
  description_of_expected = surface_descriptions_in(expected).inspect
  "#{english_name} #{description_of_expected}"
end


  








  

    #failure_message  ⇒ String 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/start_or_end_with.rb', line 15



def failure_message
  super.tap do |msg|
    if @actual_does_not_have_ordered_elements
      msg << ", but it does not have ordered elements"
    elsif !actual.respond_to?(:[])
      msg << ", but it cannot be indexed using #[]"
    end
  end
end


  








  

    #match(_expected, actual)   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/start_or_end_with.rb', line 36



def match(_expected, actual)
  return false unless actual.respond_to?(:[])

  begin
    return true if subsets_comparable? && subset_matches?
    element_matches?
  rescue ArgumentError
    @actual_does_not_have_ordered_elements = true
    return false
  end
end